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Finding the Fourth Proportional to 238,079.64, 328,555.30 and 130,656.48

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Solution

The fourth proportional to 238,079.64, 328,555.30 and 130,656.48 is: 180,308.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,079.64 : 328,555.30 = 130,656.48 : x
  2. Step 2: Convert to fraction form
    238,079.64/328,555.30 = 130,656.48/x
  3. Step 3: Cross multiply
    238,079.64x = 328,555.30 × 130,656.48
  4. Step 4: Simplify right side
    238,079.64x = 42,927,878,983.34
  5. Step 5: Solve for x
    x = 42,927,878,983.34/238,079.64
  6. Step 6: Final answer
    x = 180,308.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.